109 V8 fuel tank breather

AJofShabby

Member

Posts

78

Location

UK

• Sep 21, 2023

• #1

Hi

I’ve a 109 V8 with fuel tank under passenger seat. The engine dies after a few seconds unless the fuel cap is off. How do I go about unblocking the fuel breather as I think that’s the issue.

Tks.

 

steve2286w

Well-Known Member

Posts

4,498

Location

monkeyangerland

• Sep 21, 2023

• #2

Good question I have twin tanks and when switched to passenger side I think that happens to mine , it was on my to do list, not got round to it yet, so hopefully suggestions will come

 

W

Wildefalcon

Well-Known Member

Posts

1,664

• Sep 22, 2023

• #3

New cap. Old cap soaked in brake cleaner. Replace breather hose.

 

AJofShabby

Member

Posts

78

Location

UK

• Sep 22, 2023

• #4

Wildefalcon said:

New cap. Old cap soaked in brake cleaner. Replace breather hose.

Click to expand...

It has the fuel tank under the passenger seat, so there is no cap as such.

 

W

Wildefalcon

Well-Known Member

Posts

1,664

• Sep 22, 2023

• #5

Military spec. Gotcha. Same applies, except check the cork gasket.

 

steve2286w

Well-Known Member

Posts

4,498

Location

monkeyangerland

• Sep 22, 2023

• #6

Is there some kind of pin hole/ breather in the cap itself , if I run mine for a bit and then release cap you can hear the air rush in as it must be operating under vacuum